Always wearing a smiley face, Oh Ji-ah exerts herself no matter what, dreaming of a bright and shining future. But then, she is diagnosed with thymus cancer out of the blue. In spite of that, the company and her family force her hand as usual… While she is living her usual life, her friend Anna comes to see her. Anna, Jia’s role-model as the CEO of a company, suggests going on a tour around the country in a convertible the very next day but Jia refuses to go due to the pile of work she has to do...